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Measurement and Instrumentation
A mulliammeter can be used as
Voltmeter and ammeter
Ohmmeter
Wattmeter
Frequency meter
Voltmeter and ammeter
Ohmmeter
Wattmeter
Frequency meter
Answer
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Related Question
Measurement and Instrumentation
Consider the following statements : In a measuring instrument, 1. Linearity is more important than sensitivity. 2. High precision indicates high accuracy 3. Accuracy cannot be better than resolution. Of these statements
1, 2 and 3 are correct
1 and 2 are correct
2 and 3 are correct
1 and 3 are correct
1, 2 and 3 are correct
1 and 2 are correct
2 and 3 are correct
1 and 3 are correct
Answer
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Measurement and Instrumentation
The circuit in figure is used to measure the power consumed by the load. The current coil and the voltage coil of the wattmeter have 0.02 Ω and 1000 Ω resistance respectively. The measured power compared to the load power will be
0.4% less.
0.2% less.
0.4 more.
0.2% more.
0.4% less.
0.2% less.
0.4 more.
0.2% more.
Answer
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Measurement and Instrumentation
Why is a MISC meter not recommended for DC measurement?
The error is high due to eddy current effect
The meter is calibrated for AC and it’s error for DC would be high
The error is high due to hysteresis effect
The meter does not respond to DC signals
The error is high due to eddy current effect
The meter is calibrated for AC and it’s error for DC would be high
The error is high due to hysteresis effect
The meter does not respond to DC signals
Answer
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Measurement and Instrumentation
A wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of
Thermoelectric emfs.
All of above.
Resistance of connecting leads.
Contact resistance.
Thermoelectric emfs.
All of above.
Resistance of connecting leads.
Contact resistance.
Answer
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Measurement and Instrumentation
The range of a moving iron ac ammeter is extended by
None of the listed here
A multiplier
Changing number of turns of operating coil
A shunt
None of the listed here
A multiplier
Changing number of turns of operating coil
A shunt
Answer
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